Thread-delivering mechanism



T. I. HAYES. THREAD DELIVERING MECHANSM.

- F i g. 1.

Patented Feb. 1, 1921.

UNITED STATES TEOMAS J.

OF MAINE.

PATENT OFFICE.

ASSIGNOR TO ABBETTR MASSACHUSETTS, A CORPOBATION r mnan-nismvnmne rrnoimmsm.

Speeification of Letters i'atent.

Patented Feb. 1, i 1921.

Application filed. ugust zo, 1917. Serial No. 187,()58.

To `all whom it may com-era:

Be it known` thtt1THOMAS J. HAYEs, a citizen ot' the United States, and resident of Boslhdale, County of Suflollc, State of Massachusetts, have invented` an Improvement in Thread-Delivcring the :following description, in connection with the accompanying drawing; is a spec1-` ication, like characters on the drawing representirelike parts. y i

This invention 'relates to improvements in thread delivering mechanisrns, particularly adapted for sewing marhines and other Ina chines in which thread is unwound from a, spool or other form of thread carrierand the object of the invention is to provide "a thread deliveryinechanism from which the thread may be drawn by any suitable mech anism without prdducin; kinks or knots in the thread. a a i In'many 'forms of thread delivering mechanisms. and particularly those forms in which the thread is pulled from the thread carrier over the end ot the spindle or spool upon which the thread is wound, the spirals of thread which are successively drawn 0 form kinks or knots which, when drawn into fzuiding mechamsm tor directing the thread to the inetrumentality whi h pulls it oih causesthe hreakaze or the thread or at least an undesirable tension npont. This action also occurs to a considerable extent in` mechanisms in which the thread is drawn` off of a rotatina' spooL The object of the present invention is to provide means which will permit the thread to he drawn oti from a stationary yarn carrier .and delivered to i the `inStrumentality, which draws it oti',

whether thesame be the stitch forming mechanism of the sewing machine, a spinning `inachine -o`r other clevice in' which threads oryarns are used' without danger of Another ohiectot the invention is to provide a spool holding device which may he adapted to various lengths of spools and which will hold the same properly while the thread s being drawn off.

Other obiects of the invention will more fully appear from the following: description and the accompanying drawinzs and will be pointed out in the annexed claims.

4 A` prei'erred embodiment of the invention is illustrated in the accompanying drawings Mechahism, of which as applied to the armjof a sewing machine of the ,blind stitr h type in which a reciprocating or oscillating needle and complemental stltch forminz mechanisn are located and operated above the work support, but it is to be understood that the invention may he used with any sort of thread manipulating device i'or which it is adapted.

Inthe drawings; i i i e i t Figura 1 is a View showing a portion of thesewing machine arm ,and head With a preterred embodiment of my thread delivp 1nt! mechanism supported uponth'e said arni,` i Fin 2 is a longitudinal vertical sectional view of the standard and spool carrier supported thereby, a w

y Fig. 3 is an end elevation of the standard and spool carrier, and, y i y Fig. 4 is a View of a hook for drawing the thread throu h the hollow spindle of the thread deliverina device. V

The sewing machine*` which is partly illustrated herein is of the Arhetter type of blind stitch sewing machine and comprises a base 1` through which .projects the work support 2 which coperates with a presser foot 3 carried by a hook hracltet i depending* from the sewing nachine head 5 which is ca'rried hy the usual overhangins' arm 6. The stitch tormino mechaiiism whichis car riecltby the head comprises an oscillating needlehar 7 carryiner a curved needle which is actuated `hy suitable -mechanism (not shown) within the arni and head of the inachinet the complemental stitchv forming Inechanism preterably be ne: a rotary hook carried by and revolving. within the hook bra chet 4; in operative relation to the needle. The thread& which runs to the needle is engaged by the arm 9 of the take-up mecha nism,- which may be of any usual form and is drawn bythe act on of the needle and takeup through a .slack thread take-up 10 and tension device 11 from the spooh These parts ot the sewing machine may be of any usual type. i i i i i Itis customary in deliverine thread to the stitch forming mechanism of sewing ma chines to draw the same directly from the spooh said spool being usually rotatably mourited upon a suitable spindle supported ata convenient point upon the sewin machine, asfor example, thetop of the sewng machine arm.

- any event be likely When the thread 'is drawn from the spool y the intermittent action of the needle and take-up mechanism, the momentum of the spool often causes the throwing off of an eXcessiVe amount of thread during the time the take-up mechanism has ceased to draw upon it, and this thread, by reason ot the twist in it curls up into the form of kinks or knots which are drawn into the tension device and sometimes cause the breakage of the thread but more often interteres with the proper tension used in setting the stitch.

he present invention is designed to obviate this kinking and knotting of the thread. .In the preterred embodiment of t e invention illustrated herein the thread aperture to receive a. from any suitable part of as the top of the arm, said standard beinp` Secured to said stud by a set screw 14:; The standard is provided at its top with. a transversely extending journal with a boss 16.

end'against the said set screw preferably being provided With a suitable milled head 19.

at suitable distance from the encls thereof by solder sweating or any other desirable manner. This disk may be made ot sheet metal and its periphery. beaded to or partly spherical surface 21 which will serve as a thread guide without abrading the thread which runs over it.

n the use of the device the spool 22 is clamped between the disk 20 and the end of the journal 15 and thereby prevented from rotation. The thread 8 from the spool is earried over the curved periphery of the disk 20, thence through the receiving 'end 23 of t e spindle, then from the, delivery end 24 of the spindle is led through a tension instrumentality and thence throu h the thread take-up 10 and needle. v

The tension instruinentality 25 through which the' thread passes from the delvery end 24 of the tubular spindle serves to maintain the thread taut between it and the tension device 11 or the instrumentality which raws the thread from the spool.

running from the spindle to it will not in to obtain sufiicient slack to permit its knking. This tension instrumentality 25 also prevents the thread from kinking between itself and the tension device ll or the Operating mechanisni which draws the thread from the spool.

he tension instrumentality 25 may be of any suitable character. As illustrated hei-ein the standard 12 is provided with a laterally extending arm 26 having on its under surface a thread guiding groove 2?, the thread being clamped in said groove and a slight tension applied thereto by a spring plate 28 which is Secured to said arm by a screw 29.

In the operation of the device the thread manipulating` instrumentality, which is illustrated herein as a reciprocating needle sewing machine, intermittently draws upon the thread pulling the same through the tension instrumentality and the tubular spindle 17. As the thread is thus drawn longitudinally the portion which extends from the receiving end 23 of the tube over the pcriphery 21 of the disk 20 revolves in the form of a broad loop around the spindle following the spirals in which it is coiled As the thread is drawn at substantially right angles to the spirals and is lifted from the body of the spool by the guiding surface 21 of the disk 20 it is drawn oli" smoothly with no momentum produced which would cause the discharge of whole spirals or loops from the spool, consequently the thread runs smoothly from the spool through he tubular spindle, to the tension instrumentality 25, the latter being located sufiiciently near the delivery end 24: of the spool to prevent kinking of the thread due to the twist in the thread itsel The thread running from the tension instrumentality 25 to the mechanism which draws it off is maintained taut in the manner aforesaid so that there is no possibilty of loops or kinks being drawn into the tension device or other thread engaging or manipulating members.

It will be understood that while my in- Vention is particularly designed for sewing machines of any type whether chain or lock stitch it is ad pted forother uses connection with spinning machines, spoolers or other machines in which thread is unwound from a thread carrier and delivered to an nstrumentality for manipulating the same.

also be understood that my inventon s not limited to the use of a stationary thread h 'ding device for causing the thread to unwind from the spool in the form of a broad loop but that any device or instrumentality which will serve the purpose may e used within the spirit and scope of the following claims.

Having thus described my invention what I claim as new and desire to secure by Letters atent is:

ing oi" a tubular spindie having Secured thereto e disk of larger diameter than the end of the spool and provided With a sniooth periphery, means ior adjustebly secili-ing said spindle to said stand Whereby the spool may be clziinped between said disk and seid stand. and means for guidng the running thread from seid spooi over the periphery of said disi: and through seid spindle wherehy the thread Will he unwound from sai d spooi in a hroad loop.

2. Thread deiivery niechanism comprising e stand, :L spooi supporting member consisting of :i tuhular spindie having secured thereto a disi( of larger diameter then the end of the spool and provided With e smooth perphery, means for adjustahiy securing said. spindle to said stand Whereby the spool may be clamped between said disk and said stand, said spindle being extended beyond seid disk wherehy the running thread may he married from said spool over the periphery of said disk and through said spindle to cause the thread to be unWound from the spool in a hroad 10013.

Thread delivery mechanism comprising :i stand, ar spool supporting member consisting ot a tuhuler spindie having Secured thereto a disk of larger diameter than the end of' the spooi-an'd provided with a snooth periphery, means for adjustahly securing said spindie to said stand wherehy the spooi nay be ciamped between said disk and seid stand, means tor guding the running thread from said spooi over' the periphery of said disk and through said spindie Whereby the thread will he unwound from said spooi in t hrosd ioop and means located in proximity to the deiivery end of the spindle for applying tension to the thread.

In testimony Whereof I have name to this specificaton.

THOMAS J. HAYES.

signed my 

